2026-10-09 APP 2.0.0-beta48 has been released !
This is mainly a bug fix release for the reported bugs in beta47. In addition it has a significant User Interface performance improvement noticable when you need to process 1000s of images in APP.
2026-10-03 APP 2.0.0-beta47 has been released !
This is a very big release... many code optimizations/rewrites, many parts of APP are much faster and more precise, especially star analysis and registration are much faster ! Big mosaics will go much faster 🙂
And we introduce a new preview filter, which includes the new Adaptive Deep Sky Stretch and a General Levels Stretch, this has been long over due. The old preview filter (the panel on the right side to stretch and preview your data) has not been updated for a couple of years and it is a critical part of any APP session.
Adaptive Deep Sky Stretch or ADSS is a much more intuitive stretch algorithm. It is also color preserving (which is a great new addition in itself ! ) which means that the highlights are no longer bleached, color is maintained from the linear data while stretching. You can simply stretch your data using the sky background level and signal width sliders which work much easier and more intuitive. You no longer need to fiddle with the old complicated sliders with zoom buttons. All the zoom buttons for the sliders are made redundant. And you can enter slider values in the slider value fields yourself. I will make a youtube video in the coming days to explain and fully introduce ADSS. Once the video is ready, it will be highlighted on the forum.
RGB Combine upgrade !. The RGB Combine Tool has been rewritten mostly. The tool is faster and easier to use and most importantly, the Luminance slider to inject a luminance channel or channels into the RGB composite is now working correctly. It no longer bleaches the RGB colors. Combined with the new ADSS preview, you will get much better and easier great composites with great color! I will also explain this in a new youtube video.
These are 58 minutes of subs at 30s and 60s from last night. One is done without the comet registration and the other with. Worked good for me. Just wondering how others got the stars to not trail when using the comet registration. A bit confused, but thanks for great update, looks much better after the comet registration
. Still learning.
Interesting result on the right indeed, but great to see APP working here. 🙂 In a follow-up version you will be able to remove the trails better, but people now use aggressive outlier rejection for that, sigma clipping.
Interesting result on the right indeed, but great to see APP working here. 🙂 In a follow-up version you will be able to remove the trails better, but people now use aggressive outlier rejection for that, sigma clipping.
Thanks, i watched the video again and was able to try the aggressive rejection and it did work. However still new at this and learning.
Thanks
Hi. I've just had a play with the Beta Comet stacking, here are my results... These were 25 20 second images with Hypercam 183C ProTec and Starwave 80ED. Couldn't get the light pollution tool to work though...
What didn’t work with the LP tool?
@vincent-mod Hi. I could not process out the orange light from light pollution that was affecting my view of the Comet. No idea why? Tried a few times. Always happy for any advice.
Should be possible, maybe it does then affect the faint comet tail, which can be a negative thing about it in this case. I would need your data to try myself, if you want you can upload it to our server;
Go to https://upload.astropixelprocessor.com and use upload1 (or upload2 till 5) as username and password will then be the same as the username.
Create a directory named “charles-thody-orangebackground” and upload in there. Thank you!
Hi Vincent. Many thanks. A,m uploading some of my data files to the directory now. I will be very interested to see your results and how you achieve them. Charles
Thanks Charles,
I downloaded the data and will have a look today.
Ok so to me the data looks really good. Also after LP, I'm not seeing light pollution to be honest.
After first integration:
After LPC:
Hi Vincent. Many thanks for this, much appreciated.
